Dr. Garrigan is the Loyola Chair of Theology and Trinity College Dublin and the Head of the School for Religions, Peace Studies, and Theology. She works primarily at the intersection of theology and social justice, specifically through the lens of sacramental theology, interpreting the material as spiritual and the embodied as the locus of divine revelation. Dr. Garrigan previously served as founding director of Emmaus Coventry, a charity that empowers people to overcome homelessness through tailored support in communal living and gaining employment skills in the recycling industry. She has a weekly radio broadcast called Witness that connects theology with current events.